<template>
  <div class='article-comments'>
    <!-- 当前评论 -->
    <van-cell title='当前评论' :border='false'>
      <van-image
        slot='icon'
        round
        width='30'
        height='30'
        style='margin-right: 10px;'
        :src='currentCommon.aut_photo'
      />
      <span style='color: #466b9d;' slot='title'>{{ currentCommon.aut_name }}</span>
      <div slot='label'>
        <p style='color: #363636;'>{{ currentCommon.content }}</p>
        <p>
          <span style='margin-right: 10px;'>{{ currentCommon.pubdate | fromNow }}</span>
        </p>
      </div>
      <van-icon slot='right-icon' />
    </van-cell>
    <!-- /当前评论 -->
    <van-divider>全部回复</van-divider>

    <!-- 对当前评论 回复列表 -->
    <van-list
      v-model='loading'
      :finished='finished'
      finished-text='没有更多了'
      @load='onLoad'
    >
      <van-cell
        v-for='(item, index) in list'
        :key='index'
      >
        <van-image
          slot='icon'
          round
          width='30'
          height='30'
          style='margin-right: 10px;'
          :src='item.aut_photo'
        />
        <span style='color: #466b9d;' slot='title'>{{ item.aut_name }}</span>
        <div slot='label'>
          <p style='color: #363636;'>{{ item.content }}</p>
          <p>
            <span style='margin-right: 10px;'>{{ item.pubdate | fromNow }}</span>
          </p>
        </div>
      </van-cell>
    </van-list>
    <!-- 回复列表 -->

    <!-- 发布回复 -->
    <van-cell-group class='publish-wrap'>
      <van-field
        clearable
        placeholder='请输入回复内容'
        v-model.trim='content'
      >
        <van-button
          slot='button'
          size='mini'
          type='info'
          @click='publishFn'
        >发布
        </van-button>
      </van-field>
    </van-cell-group>
    <!-- /发布回复 -->
  </div>
</template>
<script>
import { addCommonToCommon, getCommonToCommon } from '@/api/article'

export default {
  name: 'CommentReply',
  props: {
    currentCommon: {
      type: Object,
      required: true
    },
    artId: {
      required: true
    }
  },
  data () {
    return {
      list: [], // 评论列表
      loading: false, // 上拉加载更多的 loading
      finished: false, // 是否加载结束
      content: '' // 评论内容
    }
  },
  methods: {
    async onLoad () {
      const { data: res } = await getCommonToCommon(
        this.currentCommon.com_id,
        this.offset
      )
      this.list = [...this.list, ...res.results]
      this.loading = false
      this.offset = res.last_id

      if (res.results.length === 0) {
        this.finished = true
      }
    },
    async publishFn () {
      if (!this.content) {
        return this.$toast('回复的内容不能为空')
      }

      const { data: res } = await addCommonToCommon(
        this.artId,
        this.currentCommon.com_id,
        this.content
      )
      console.log(res)

      this.list.unshift(res.new_obj)
      this.$toast('发布成功')
      this.content = ''

      this.$emit('addCommonCount')
    }
  }
}
</script>
<style lang='less' scoped>
// 发表评论的区域是固定在下端的
.publish-wrap {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
}

// 给发表评论区空出地方
.van-list {
  margin-bottom: 45px;
}
</style>
